Diodes Incorporated AP9214L-AF-HSB-7

Overview

AP9214L-AF-HSB-7 from Diodes Incorporated is a single-chip Li+ battery protection IC integrating dual N-channel MOSFETs (R_SS(ON) = 13 mΩ typ at V_DD = 4.0 V) and precision voltage/current detection circuitry for 1-cell rechargeable battery packs. It provides overcharge (3.5–4.5 V, ±25 mV), overdischarge (2.0–3.4 V, ±35 mV), discharge/charge overcurrent (±15 mV), short-circuit (±100 mV), and overvoltage charger (8.0 V fixed, ±2 V) protection with built-in delay timers and 0V charge enable.

For engineers reviewing the AP9214L-AF-HSB-7 datasheet, AP9214L-AF-HSB-7 pinout, AP9214L-AF-HSB-7 application in battery management systems, or AP9214L-AF-HSB-7 equivalent for portable power solutions, this device delivers integrated MOSFET control, ultra-low quiescent current (3.0 µA typ in normal mode), selectable power-down mode, and factory-configurable overcharge release behavior (auto-release or latch).

Technical Context

The AP9214L-AF-HSB-7 implements independent high-accuracy analog comparators for six protection conditions-overcharge, overdischarge, discharge overcurrent, short circuit, charge overcurrent, and overvoltage charger-with fixed internal delay timers (e.g., t_CU = 1.0 s typ, ±20% accuracy). Its logic circuit controls two N-channel MOSFETs sharing a common drain (EP pad), enabling bidirectional current path isolation without external FET drivers.

It features programmable functional options set at wafer-level: power-down mode (enabled in -AF variant), 0V battery charge permission, and overcharge protection auto-release. The VM pin senses both charge/discharge current via external sense resistor R2 and charger input status, while internal resistors RVMD (300 kΩ typ) and RVMS (30 kΩ typ) support automatic state recovery during overdischarge or short-circuit events.

Key Specifications

Pinout & Package

AP9214L-AF-HSB-7 uses the U-DFN2535-6 (Type B) package with exposed thermal pad (EP), optimized for compact battery pack PCB layouts and efficient heat dissipation. Pin-out Option 1 applies per ordering code HSB.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 1-cell Li+ battery protection applications.

Compared with S-8261A and RP506K, the AP9214L-AF-HSB-7 uniquely integrates dual N-MOSFETs with 0.1 µA power-down, factory-set 0V charge, and 8.0 V overvoltage charger detection-enabling fully autonomous, maintenance-free battery operation in space-constrained portable devices.

Availability

AP9214L-AF-HSB-7 is available at Aetrix Electronics and suitable for smartphone battery packs, wireless earbud batteries, power tool modules, and medical wearable sensors requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.

Supply support for AP9214L-AF-HSB-7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal devices, with design centers in Asia, Europe, and the US, and manufacturing in ISO/TS 16949-certified facilities.

The AP9214L belongs to Diodes' battery protection IC product line, engineered specifically for high-reliability, space-constrained 1-cell Li+ applications in consumer, medical, and industrial portable equipment where integration, ultra-low power, and safety certification are critical.

FAQ

What is the function of the VM pin in AP9214L-AF-HSB-7?

The VM pin serves as a bidirectional current-sense and charger-status input. It measures voltage drop across external resistor R2 to detect discharge overcurrent, short circuit, and charge overcurrent conditions. During overdischarge, it also enables automatic recovery via internal pull-up (RVMD) or pull-down (RVMS) resistors depending on operating state, eliminating need for external wake-up circuitry.

Does AP9214L-AF-HSB-7 support automatic recovery from overdischarge without charger connection?

No-the -AF suffix indicates power-down mode is enabled, so overdischarge recovery requires charger connection to raise battery voltage above V_DU. Auto-wake-up variants (e.g., AP9214LA) support recovery without charger, but AP9214L-AF-HSB-7 enters ultra-low-current sleep state and remains latched until V_DD rises via external charging source.

How does the EP thermal pad affect PCB layout requirements?

The EP pad is the common drain node of both integrated MOSFETs and must be connected to a large copper area (≥25 mm² recommended) for thermal dissipation and low-inductance current conduction. It should not be electrically isolated or left unconnected; solder mask opening is required, and thermal vias to inner ground planes improve reliability under 9 A continuous load.

Can AP9214L-AF-HSB-7 be used in automotive applications?

AP9214L-AF-HSB-7 is not AEC-Q100 qualified and lacks automotive-grade screening, temperature range extension (+105°C), or PPAP documentation. Diodes offers automotive-qualified alternatives (e.g., AP9221Q) for under-hood or infotainment battery packs; this part is intended for commercial portable electronics only.